The energy storage startup has secured Engie, the utility previously known as GDF Suez, as an investor in a DBL Partners-led round.

US-based energy storage system producer Advanced Microgrid Solutions has raised $18m in a series A round featuring Engie, the energy utility previously known as GDF Suez, the Wall Street Journal reported yesterday.

The round was led by DBL Partners, the $400m joint fund formed by venture capital firms DBL Investors and Technology Partners last month, and also included contributions from angel investors including Arnold Schwarzenegger.

Advanced Microgrid’s storage systems are comprised of clustered networks of advanced batteries that can be…